ISHS Acta Horticulturae 674: III International Symposium on Applications of Modelling as an Innovative Technology in the Agri-Food Chain; MODEL-IT
A MODEL FOR WATER FLOW AND NUTRIENT UPTAKE BY HORTICULTURAL CROPS GROWN IN A SOILLESS CULTURE SYSTEM |
| Authors: | M. Silberbush, J. Ben-Asher, J.E. Ephrath |
| Abstract:
A model is proposed for the simulation of nutrient solution flow in a Nutrient Film Technique (NFT) system, and uptake by plants. The system is consisted of a channel with a thin layer of a porous material. The nutrient solution would be applied via dripping emitters, uniformly spaced along the channel, and drain to a reservoir. The solution would then be compensated for water and nutrients’ losses, and re-pumped to the irrigation system. The model was tested against N and K uptake by growing lettuce (Lactuca sativa L.) plants. Uptake of the major nutrients and the effects of salinity buildup were simulated and discussed. | |
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